Vanguard Managed Solutions

Vanguard Managed Solutions

Vanguard Applications WareSNA Feature Protocols

XDLC

Notice

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Part No. T0101-06, Rev GPublication Code: DSFirst Printing: November, 1998

Manual is current for Release 6.2 of Vanguard Applications Ware.

XDLC PAD Protocol

Overview

Introduction This manual targets people with extensive data communications experience, who can effectively monitor the operation of Vanguard products and make configuration adjustments when required.

This documentation covers hardware requirements, configuration for the XDLC option, operation instructions, and administration information.

Alarms For details about the alarms and reports for XDLC PAD Protocol, refer to the Vanguard Applications Ware Alarms and Reports Manual (Part Number T0005).

About the XDLC Option

The X.25 Data Link Control (XDLC) PAD Port supports Secondary Synchronous Data Link Control (SDLC) Stations and MX25 Slave Stations on a single multidrop line and can be configured to run on nodes contained in Vanguard products. Check the Software Release Notice for your version of operating software for more details on platform support for the XDLC option.

In This Manual Topic See Page

Introduction ................................................................................................... 2Typical Application ....................................................................................... 3Features.......................................................................................................... 4Configuration Sequence ................................................................................ 5

Configuring the XDLC Port Record ......................................................... 7Description of XDLC Port Parameters ..................................................... 8Configuring the XDLC Port Stations Record ........................................... 13Description of XDLC Port Stations Parameters........................................ 14

Statistics......................................................................................................... 21XDLC Port Record Worksheet ...................................................................... 32XDLC Station Record Worksheet ................................................................. 33SDLC Station Record Worksheet .................................................................. 34MX25 Station Record Worksheet .................................................................. 35

XDLC PAD Protocol 1

Introduction

Introduction

What is the XDLC PAD Protocol?

XDLC is a multipoint enhancement to Vanguard concentrator support of IBM SNA/SDLC devices (such as 4700 cluster controllers) and Vanguard products on the same multidrop line. This provides a migration path for typical banking customers who plan to replace their current Automatic Banking Machines (ABMs) with new PCs.

XDLC Components The XDLC PAD Port has three major components:

• SDLC • MX25• PAD Link Procedures

The XDLC PAD Link operates under the framework of the SDLC and MX25 protocols.

SDLC Protocol The SDLC Protocol component operates as an SDLC TPAD port and provides the same basic features as a Vanguard SNA/SDLC TPAD port:

• NCP Packet Switching Interface Support (NPSI)• IBM QLLC Protocol Support

In addition to providing the functionality of an SDLC TPAD port, the XDLC PAD supports both Two-Way Alternate (TWA) and Two-Way Simultaneous (TWS) transmission modes.

MX25 Protocol The MX25 component of the XDLC PAD Port contains the same basic features as the MX25 Master PAD Port and acts as an MX25 Master. MX25 extends traditional X.25 point-to-point line configurations into multipoint line configurations, which are similar to IBM SDLC multipoint configurations. The XDLC PAD also supports Non-Return-to-Zero Inverted (NRZI) transmission encoding.

Operating as a Master MX25 device, the MX25 component can communicate with several MX25 Slave devices on a single line. It is responsible for establishing, controlling, and disconnecting the data link with the Slaves.

PAD Link Procedures

The PAD link manages two procedures: Polling and Frame Handling.

PollingThe link polling component of the XDLC PAD Port combines the polling functionality that already exists in the SDLC PAD Port and the MX25 PAD Port into a single polling manager.

Frame HandlingFrames are handled in the same way by the SDLC or MX25 components of the XDLC port. The MX25 component of the XDLC PAD Port contains the same basic features as the MX25 Master PAD Port and acts as an MX25 Master.

2 XDLC PAD Protocol

Typical Application

Typical Application

Introduction XDLC can be used with existing ABM equipment and also during the transition period if new PCs are added.

Typical Configuration

Figure 1 illustrates a configuration that enables a Vanguard XDLC PAD to connect bank locations and stand-alone ABMs. Through a multipoint configuration, the ABMs connect their SDLC lines directly into the XDLC port. Using a similar setup, the bank locations connect their MX25 slave HDLC lines to the same XDLC port.

This configuration allows the XDLC port to act as an SDLC TPAD for the remote sites and as an MX25 Master for the bank locations. Both the ABMs and the SDLC devices that are connected to Vanguard SDLC TPAD ports at the bank location gain access to the host through the SDLC HPAD port at the host location.

Figure 1. Typical Multipoint Configuration Using Vanguard XDLC PAD

65xx

65xx

XDLC

SDLCBSC

AsyncLAN

65xx4700

ClusterController

ABM

MX25 SDLC MX25 SDLC

SDLC-onlySite

BranchA

BranchB

DialBackup

BranchC

XDLC PAD Protocol 3

T0101-06, Revision G Release 6.2

Features

Features

Introduction XDLC PAD port features include:

• SDLC TPAD functionality• MX25 Master PAD functionality• IBM NPSI compatibility

Physical Line Characteristics

The physical line of the XDLC PAD Port has these characteristics:

• Clock speeds between 1200 bps and 80 kbps• Internal or External Clock source• Full-duplex physical line• NRZ and NRZI transmission encoding• TWA and TWS transmission mode

Hardware XDLC Supports

The XDLC PAD Port supports devices with secondary SDLC protocol interfaces and devices with MX25 Slave Station interfaces, including:

• IBM 4701 Finance Communication Controllers• IBM 3274 or 3174 SNA/SDLC Controllers• IBM 3276 SNA/SDLC Display Stations• IBM 3767 Communication Terminals• IBM Application System/400s• IBM System 36• Vanguard products

Software The XDLC PAD Port has these software characteristics:

• Up to 32 drops per line and up to 256 drops per node• Non-Return to Zero (NRZ) and Non-Return to Zero Inverted (NRZI)

transmission encoding• Two-Way Alternate (TWA) and Two-Way Simultaneous (TWS) transmission

mode• Request Initialization Mode (RIM) and Set Initialization Mode (SIM) frames

not supported • Modulo 8 sequencing• Primary-to-secondary Qualified Logical Link Control (QLLC) for SDLC

devices

4 XDLC PAD Protocol

Configuration Sequence


Introduction This section describes the records you must configure to implement XDLC.

XDLC Configuration

You must configure the following to implement the XDLC protocol option:

• XDLC Port Record.• XDLC Port Stations Record, with a station type of either SLDC or MX25.• Transmission Encoding parameter in the MX25 Port Record for NRZI

support.• HPAD Poll Response Delay Parameter in the SDLC HPAD Port Record to

compensate for possible performance limitations of the host.

NRZI Support for MX25

This release combines the functions of the Multipoint X.25 Master Port and the SNA/SDLC TPAD into a single port (XDLC). To make the transmission encoding for the two protocols compatible, NRZI support is required for the existing MX25 software. As a result of this implementation, MX25 slave ports that are connected to the XDLC port must also support NRZI.

Transmission Encoding Parameter in MX25 Port RecordThis parameter appears on the screen following Port Control in the MX25 Port Record. Refer to the MX.25 Protocol document in the Multi-Service Feature Protocols Manual (T0103).

When you configure the MX25 port record, set the this parameter Transmission Encoding to specify the method of transmission encoding:

Transmission Encoding

Range NRZ, NRZI

Default NRZ

Description Indicates the data encoding used for this XDLC link.• NRZ: Non-Return-to-Zero (encoding)• NRZI: Non-Return-to-Zero Inverted (encoding)

XDLC PAD Protocol 5



SDLC HPAD Poll Response Delay

To compensate for possible performance limitations of the host, the HPAD Response Delay parameter provides a 100 msec delay to the poll response from the SDLC HPAD, after the HPAD receives a poll from the host.

HPAD Response Delay Parameter in the SDLC HPAD Port RecordThis parameter appears on the screen following Transmission Type in the SDLC HPAD Port Record. Refer to the SDLC Feature Protocols Manual (T0102-05).When you are configuring the SDLC HPAD port, set the following parameter in order to specify the desired response delay:

HPAD Response Delay

Range 0, 50, 100, 150, 200 ms

Default 0

Description Selecting the default value of zero eliminates the delay period and has no impact on performance.

6 XDLC PAD Protocol


Configuring the XDLC Port Record

Introduction This section describes procedures used to configure the XDLC protocol option, including how to navigate through the Control Terminal Port (CTP) Main menu and access the XDLC port record.

NoteFor more detail about CTP procedures, refer to the Vanguard Configuration Basics Manual (T0113).

Function The XDLC Port Record defines information about the XDLC PAD Port.

Access and Configure XDLC Port

Follow these steps to access and configure an XDLC Port Record.

Step Action Result

1 Select Configure, from the CTP Main menu.

The Configure menu appears.

2 Select Port, from the Configure menu, and enter a port number.

The Port Number first parameter appears.

3 Enter the number of the port and then <CR>.

The Port Type parameter appears.

4 Enter XDLC and then <CR>. Parameters for an XDLC Port type appear, beginning with Port Control. For details on parameters, see “Description of XDLC Port Parameters” section on page 8.

5 Enter a semicolon <;> once you have entered values for all parameters.

The record is saved.

XDLC PAD Protocol 7



Description of XDLC Port Parameters

Introduction This section details the XDLC Port parameters.

Parameters identified by an asterisk require that a Node boot be performed for changes to the parameter to take effect.

NoteIf you have enabled Ease of Configuration, you need to boot only the port to make changes to the parameters marked with an asterisk. For more information, refer to the Ease of Configuration section in the introductory portion of the binder (SNA Feature Protocols Manual, Part Number T0101).

Port Number

Range 1 to 54

Default 1

Description The number of the port you are configuring. This number corresponds to the physical port position at the rear of the unit and is the Port Record reference number.

NoteIn Vanguard software releases prior to Release 3.0, the Port Number parameter ranges from 1 to 48.

*Port Type

Range X.25, XDLC

Default X.25

Description The type of port you are configuring.

NoteA Node Boot is required for any changes to this parameter to take effect.

Port Control

Range NONE, MB

Default NONE

Description Specifies one of the following port control options:• NONE: No option specified.• MB: Raises Pin 22 when the port becomes disabled.• RTS_MON: Increments the Frame Error statistics only

when RTS is high.

8 XDLC PAD Protocol


Transmission Encoding

Range NRZ, NRZI

Default NRZ

Description Indicates the data encoding used for this XDLC link.• NRZ: Non-return-to-zero (encoding)• NRZI: Non-return-to-zero Inverted (encoding)

Type of Line

Range FDX

Default FDX

Description Indicates that full-duplex signals are being generated.

Transmission Type

Range TWS, TWA

Default TWA

Description The transmission mode that is used on the line.• TWS: Two-Way Simultaneous• TWA: Two-Way Alternate

Clock Source

Range EXT, INT

Default EXT

Description • EXT: External clock source is used.• INT: Internal clock source is used.

Clock Speed

Range: 1200 to 38400

Default: 9600

Description: When internal clocking is used, this parameter determines the port speed in bps.

XDLC PAD Protocol 9



*Number of Stations

Range 1 to 64

Default 4

Description The number of XDLC stations on the line. This number includes MX25 slave stations and SDLC controllers (PU TYPE 1 or PU TYPE 2 devices). The maximum number of XDLC stations on a port is 32. This can be any combination of MX25 slave stations and SDLC stations, all MX25 stations, or all SDLC stations.


Poll Timer

Range 1 to 255

Default 30

Description Sets the amount of time, in 10ths of seconds (30 = 3.0 seconds), that the master waits for a slave to respond to a poll frame.

Poll Frequency Period

Range 50 to 250

Default 50

Description Sets the maximum speed, (in milliseconds) at which the Vanguard polls the slaves when no data is being exchanged.

Tries

Range 1 to 16

Default 10

Description Indicates the maximum number of attempts to complete a transmission.

XDLC Port Options

Range NONE

Default NONE

Description NONE: There are currently no options available.

10 XDLC PAD Protocol


.

Port Address

Range 0 to 15 decimal digits

Default (blank)

Description This address is inserted into the calling address field when an XDLC port makes a call.

Restart Timer

Range 5 to 255

Default 180

Description Sets the time, in seconds before the request for restart is sent again

NoteThis parameter is for the MX25 protocol component only.

Reset Timer

Range 5 to 255

Default 180

Description The time, in seconds, before the request for reset is sent again.


Call Timer

Range 5 to 255

Default 200

Description The amount of time, in seconds, before a call request is cleared.


Clear Timer

Range 5 to 255

Default 180

Description The time, in seconds, before the clear request is sent again.


XDLC PAD Protocol 11



Maximum Frame Size

Range: 1024, 4096

Default: 1024

Description: The maximum size (in bytes) of a frame, excluding the frame header and CRC for SDLC frames.

NoteThis parameter is not effective on MX.25 type stations.



Configuring the XDLC Port Stations Record

Introduction The XDLC Station Record is used to provide information about the Stations attached to an XDLC PAD Port.

Access and Configure XDLC Port Station Record

Follow these steps to access and configure an XDLC Port Stations Record.

Step Action Result

1 Select Configure, from the CTP Main menu.

The Configure menu appears.

2 Select XDLC Port Stations, from the Configure menu.

The Port Number parameter appears.

3 Enter the number of the port to which the station is assigned and then <CR>.

The Station Number parameter appears.

4 Enter the number of the station you are configuring and then <CR>.

The Station Type parameter appears and you are prompted to enter MX25 or SDLC.

5 IF... THEN...

You want to use a station type of MX25, enter MX25.

Parameters for an MX25 station type appear, beginning with Station Address.

You want to use a station type of SDLC, enter SDLC.

Parameters for an SDLC station type appear, beginning with Station Address.

6 Enter a semicolon <;> once you have entered values for all parameters.

The record is saved.




Description of XDLC Port Stations Parameters

Parameters These are the XDLC Port Stations parameters.

Parameters for an SDLC Station Type

If you select a station type of SDLC, the following configuration parameters appear that provide information about the stations attached to an XDLC PAD Port.

NoteThe station type can be changed without booting the port or the node; however, a Station Boot must be performed to make the change come into effect. A Station Boot does not disrupt the operation of any other stations.

Port Number

Range 1 to 54

Default 1

Description The number of the XDLC port that you are connecting to.

Station Number

Range 1 to n (where n = the number of stations configured in the port record).

Default 1

Description The Station Number of the station you are configuring on the multidrop line.

Station Type

Range MX25, SDLC

Default MX25

Description The Station Type (MX25 slave station or SDLC controller).

Station Address

Range 01 to FE hexadecimal

Default 01

Description The Station Address of the station that you are configuring (e.g., Station #1 is 01, Station #2 is 02, etc.).



K Frame Window

Range 1 to 7

Default 7

Description Enter the same value of Frame Level Window for devices at each end of the link.

Autocall Mnemonic

Range 0 to 8 alphanumeric characters

Default blank (Use the space bar to blank the field.)

Description Identifies the remote address that is called when polling activity for an SDLC station is detected on the XDLC line. You must configure Autocall Mnemonic on the node containing the XDLC port that is originating the call.

Protocol ID

Range 1 to 8 hexadecimal

Default C3000000

Description The first four bytes of the Call User Data comprise the protocol ID. If not configured, the PAD uses C3000000 as the protocol ID in the call.

CUG Membership

Range 0 to 8 two digit numbers

Default --,--,--,--,--,--,--,--

Description A station may be a member of up to 8 different Closed User Groups (CUGs). Each CUG membership must be a two-digit number. Separate each two-digit number with a comma (i.e., 12,35,56, etc.). No spaces are permitted between the comma and the next number.-- = no CUG membership; 00-99 = valid CUG membership




QLLC Options

Range: NONE, CUG, QRRs, XIDs, XID3, DISCs, RNRs

Default: NONE

Description: The options, for this XDLC station, are:• NONE: No option specified.• CUG: This option (Check Closed User Group) filters

incoming calls, and inserts the Closed User Group facility in outgoing calls.

• QRRs:QLLC Primary (HPAD) sends QRR after QLLC link comes up.

• XIDs: Causes the XID parameter defined below to be used for XID exchange. If this setting is not used, the XID parameter (next in sequence) is ignored. The TPAD transparently passes the XID supplied by the controller.

• XID3: Pass XID transparently between HPAD and TPAD. Allows for PU2.1/XID exchange. This parameter should not be set if XID option is selected.

• DISCs: TPAD sends a DISC frame when station goes down. The DISC may be retransmitted up to Tries times, if the Cluster Controller does not respond, before sending an SNRM.

• RNRs: Receiver Not Ready option. In NRM, TPAD initially polls with RNR until a data packet or QRR is received by the QLLC station on the TPAD side.

NoteQRRs, XIDs, and XID3 are SDLC terms. Refer to your SDLC documentation for more information about these options.

XID

Range 0 to 14 hexadecimal

Default (blank)

Description With this option selected, the TPAD's response to a QXID contains the “XID” identification parameter value defined in this parameter. Selecting this option overrides the function of exchanging identifications with the cluster controller.



MX25 Station Parameters

If you select MX25 for the Station Record, you are prompted for the following parameters.

The MX25 Station Record provide information about the Slave Stations attached to an XDLC PAD Port:

Station Subaddress

Range 0 to 3 decimal digits

Default (blank)

Description The station subaddress on the multidrop lines. This is used to build the calling address for the Call Packet. The calling subaddress is appended to the port address to create the calling address in the autocall generated.

Billing Records

Range OFF, ON

Default OFF

Description • OFF: Billing records are not created.• ON: Billing records are created.

Station Address

Range 04 to FE hexadecimal

Default 04

Description The Station Address on the multidrop line.Begin with hexadecimal 04 when assigning station names (e.g., Station #1 is 04, Station #2 is 05, etc.).

PVC Channels

Range 0 to 128

Default 0

Description Specifies the number of logical channels used for Permanent Virtual Circuits (PVCs). The total number of PVC and SVC channels on a link should be kept to a minimum to conserve bandwidth and node resources. PVC connections must be configured in the PVC table.





Starting PVC Channel Number

Range 1 to 255

Default 1

Description The starting logical channel number for the PVCs on this link. This parameter is not used if the number of PVCs is set to 0.


Number of SVC Channels

Range 0 to 255

Default 16

Description Number of logical channels used in Switched Virtual Circuits (SVCs). The total number of PVC and SVC channels on a link should be kept to a minimum to conserve bandwidth and node resources.


Starting SVC Channel Number

Range 0 to 255

Default 1

Description The starting logical channel number for the Switched Virtual Circuits (SVCs) on this link. Note that this number is not used if the number of SVCs is set to 0.


K Frame Window

Range 1 to 7

Default 7

Description Enter the K frame level window size. This parameter value must be set to the same value for devices at each end of the link.



Packet Window

Range 1 to 7

Default 2

Description Enter the W packet level window size. This parameter value must be set to the same value for devices at each end of the link.

MX25

Range NONE, INL, HOLD, CUG

Default NONE

Description • NONE: No option specified.• INL: Inter-node Link specifies that the link goes to another

Vanguard.• HOLD: Hold calls over link restart.• CUG: Check Closed User Group; otherwise, CUG passes

transparently.

NoteAny combination of the above parameters may be specified by summing: HOLD + CUG +... . .

Restricted Connection Destination

Range 0 to 32 alphanumeric characters

Default (blank)

Description All calls originating from this port are routed to the destination specified in this parameter, irrespective of route selection table entries. For example, to route calls to Port 1, use P1. To route calls to P1, Station 4, use P1S4.

NoteA blank disables this function.




CUG Membership

Range --,--,--,--,--,--,--,--

Default 0 to 8 two-digit numbers

Description A station may be a member of up to 8 different Closed User Groups (CUGs). Each CUG membership must be a two-digit number. Separate each two-digit number with a comma (i.e., 12,35,56, etc.). No spaces are permitted between the comma and the next number.-- = no CUG membership; 00-99 = valid CUG membership.

Billing Records

Range OFF, ON

Default OFF

Description • OFF: Billing records are not created.• ON: Billing records are created

Data Queue Upper Threshold

Range 5 to 15

Default 5

Description The maximum number of data packets a channel on this port queues for transmission before invoking flow control to the attached channel.

Data Queue Lower Threshold

Range 0 to 4

Default 0

Description The number of data packets a channel on this port has queued for transmission when it releases flow control to the attached channel.


Statistics

Statistics

Introduction This section describes the Vanguard statistics used with XDLC. Other Vanguard statistics are described the Vanguard Configuration Basics Manual. You can use the information displayed on the screen to monitor the operation of a node.

Detailed Port Statistics

Detailed Port Statistics provide status reports about various operations of an XDLC port.

Access Detailed Port Statistics

Perform this procedure to see the Detailed XDLC Port Statistics:

Detailed XDLC Port Statistics

Figure 2 and Figure 3 shows pages 1 and 2 of Detailed XDLC port statistics screens.

Figure 2. Detailed XDLC Port Statistics - Page 1 of 2

Step Action Result

1 Select Status/Statistics, from the CTP Main menu.

The Status/Statistics menu appears.

2 Select Detailed Port Stats. You are prompted to specify a particular port type.

3 Specify a port type of XDLC. A series of screens appears.

4 Scroll through a series of screens for one port.

You are prompted to display the detailed port statistics for the next port.

Node: Address: Date: Time:Detailed XDLC Port Statistics: Port 2 Page: 1 of 2 Port Number: 2 Port Type: XDLC Port Utilization In: 0% Port Status: Up Port Speed: 0 Port Utilization Out: 0% Physical Summary: Overrun Errors: 0 Underrun Errors: 0 CRC Errors: 0Non Octet Aligned: 0 Frame Length Err: 0 Unknown DLCI Err: 0 Last Unknown DLCI: 0 Data Summary:

IN OUT IN OUT Characters: 0 0 Characters/sec: 0 0 Frames: 0 0 Frames/sec: 0 0EIA Summary: INPUT OUTPUT

DTR RTS MB P14 DSR DCD RI CTSState:Connected (SIMPLE) L H L H H H L H

Press any key to continue (ESC to exit) . ..



Statistics

Figure 3. Detailed XDLC Port Statistics - Page 2 of 2

Port Statistics Information

Detailed XDLC Port Statistics screens contain the following information:

Node: Address: Date: Time:Detailed XDLC Port Statistics: Port 2 Page: 2 of 2

Frame Summary:IN OUT IN OUT

RR: 0 0 REJ: 0 0RNR: 0 0 DISC: 0 0SNRM: 0 0 RD: 0 0UA: 0 0 FRMR: 0 0DM: 0 0 UP: 0 0XID: 0 1 TEST: 0 0

Station Status Summary:Station Status: Up Down DisabledNumber of MX25 Stations: 0 4 0Number of SDLC Stations: 0 4 0

Press any key to continue (ESC to exit). . .

Screen term Description

Port Number Specifies a specific port (physical port number) in the node.

Port Type Indicates the type of access protocol for this port. The screen shown in Figure 2 displays XDLC, indicating that this port is accessed by SDLC and HDLC protocols.

Port Utilization Indicates a percentage of the port resources that are currently in use in both the IN (from the line to the port) and OUT (from the port to the line) directions.

Port Status Specifies the current port status.• Up: At least one station is responding to polls.• Down: None of the stations are responding to polls.• Disabled: The port is disabled by the user.

Port Speed The measured port speed in bits per second.


Statistics

Physical Summary

• Overrun Errors: Total number of overrun errors counted by the I/O driver.

• Underrun Errors: Total number of underrun errors counted by the I/O driver.

• CRC Errors: Indicates the number of errors detected by Cyclic Redundancy Check (CRC) since last node boot or reset of statistics. Indicates that a frame received contains one or more corrupted bits

• Non-Octet Aligned: Indicates an invalid frame that is not divisible by eight.

• Frame Length Errors: Indicates the number of frames received with length less than five characters.

• Unknown DLCI Err: Indicates the number of frames received with DLCI for which no station is configured.

• Last Unknown DLCI: Indicates the last unknown DLCI received in a frame.

Data Summary • Characters: Total number of characters processed until now, not including header characters.

NoteSDLC frames contain a frame header; MX25 frames contain a frame header and a packet header.

• Frames: Total number of MX25 and SDLC frames processed until now.

• Characters/sec: The average number of characters received or transmitted per second.

• Frames/sec: The average number of frames received or transmitted per second.

EIA Summary Indicates the current status of RS232 control leads.State: Always connected in the SIMPLE mode.

Frame Summary Indicates the total number of each type of frame processed.

Station Status Summary

Station Status: Summary of the current status of the MX25 and SDLC stations. The number of stations in each category is displayed.

Screen term Description (continued)



Statistics

Link Statistics Statistics for communication links can be viewed by selecting Detailed Link Statistics from the statistics menu. See Figure 4.

Figure 4. Detailed XDLC Link Statistics

Link Statistics Information

Detailed XDLC Link Statistics contain the following information:

Node: Address: Date: Time:Detailed XDLC Link Statistics Page: 1 of 1

Type State CRC Link Data frames Utilizationentity station state speed date/time errors down in/out in/out=============================================================

p1 XDLC down 0 0 0 0 0%2 0%

p1s1 xdlc down 0 0 0%sdlc 1 0%

p1s2 xdlc down 0 0 0%sdlc 1 0%

p1s3 xdlc down 0 0 0%mx25 0 0%

p1s4 xdlc down 0 0 0%mx25 0 0%

p2 X25 up 0 30-DEC-1991 0 0 513 0%16:39:20 513 0%



Entity Refers to the physical port and station number in the following format:p<port#>s<station#> where p = port and s = station.

Type/Station Indicates XDLC port type and station type, which can be either MX25 or SDLC.

State Specifies the current port status.• Up: At least one station is responding to polls.• Down: None of the stations are responding to polls.• Disabled: The port is disabled by the user.

Speed Measured port speed in bits per second.

Date/Time The date and time when the link entered the current state. Blank space indicates that no state changes have occurred.


Statistics

XDLC Station Statistics

Statistics for XDLC Stations can be viewed by selecting Detailed XDLC Station Statistics from the Statistics menu. Refer to Figure 5 and Figure 6 for examples of the information that is displayed.

Figure 5. Statistics - Page 1 of 2

CRC Errors Total number of CRC errors detected until now.

Link down Total number of times the link has made a transition from the UP state to the DOWN state.

Data frames Total number of data frames processed up to this time.

Utilization Indicates a percentage of the link resources currently in use in both the IN (from the line to the port) and OUT (from the port to the line) directions.


Node: Address: Date: Time:Detailed XDLC Station Statistics Page: 1 of 1Detailed XDLC Station Statistics: Port 2 Station 1 Page:1 of 2Port Number: 2 Port Type: XDLC Station Type: SDLCStation Number: 1 Station Address:C1 Station Status: DownQLLC State: INOPERATIVE Station Utilization In: 0%Station Utilization Out: 0%Data Summary:

IN OUT IN OUTCharacters: 0 0 Characters/sec:0 0Frames: 0 0 Frames /sec:0 0

Number of Packets Queued: 0Control Frame Summary:

IN OUT IN OUTRR: 0 0 REJ: 0 0RNR: 0 0 DISC: 0 0SNRM: 0 0 RD: 0 0UA: 0 0 FRMR: 0 0DM: 0 0 UP: 0 0XID: 0 1 TEST: 0 0




Statistics

Figure 6. Detailed XDLC Station Statistics - Page 2 of 2

XDLC Station Information

Detailed XDLC Station Statistics contain this information:

Node: Address: Date: Time:Detailed XDLC Station Statistics: Port 2 Station 1 Page:2 of 2QLLC Summary:

IN OUT IN OUTQSM: 0 0 QRR: 0 0QUA: 0 0 QDC: 0 0QRD: 0 0 QDM: 0 0QFRMR: 0 0 QTEST: 0 0QXID: 0 0

Press any key to continue (ESC to exit)...


Port Number Refers to the physical port number.

Port Type Always displays XDLC, indicating that this port is accessed by SDLC and HDLC protocols.

Station Type Indicates SDLC for SDLC Station types.

Station Number Station reference number.

Station Address Configured Station address.

Station Status Indicates the current operational status of the station:• UP: Station is responding to polls.• DOWN: Station is not responding to polls.• Disabled: Station is disabled by the user.

QLLC State Indicates the status of the QLLC layer:• INOPERATIVE: No connection exists with the station.• CLOSED: Call connected.• OPENING: Setting up session.• OPENED: Ready for operation.• CLOSING: Disconnect in process.

Station Utilization

Indicates the percentage of station resources currently in use in both IN (from the line to the port) and OUT (from the port to the line) directions.


Statistics

NoteAll counters are 32 bits in size, and restart from 0 after the maximum count is reached. An alert message is generated to inform you of the overflow condition.

MX25 Station Statistics

Statistics for MX25 Stations can be viewed by selecting Detailed MX25 Station Statistics from the Statistics menu. Refer to Figures 7 to 10 for examples of the information that is displayed.

Figure 7. MX25 Station Statistics Screen—Page 1 of 4

Data Summary • Characters: Total number of characters processed until now, not including frame characters.

• Frames: Total number of frames processed.• Number of Packets Queued: Total number of packets

queued at the SDLC protocol layer.• Characters/sec: The average number of characters received

or transmitted per second during the previous minute.• Frames/sec: The average number of frames received or

transmitted per second during the previous minute.

Control Frame Summary

Total number of frames currently processed; listed by frame types.

QLLC Summary Total number of QLLC packets processed until now, listed by packet type.


Node: Address: Date: Time:Detailed XDLC Station Statistics: Port 2 Station 1 Page:1 of 4Port Number: 2 Port Type: XDLC Station Type: MX25Station Number: 1 Station Address: 04 Station Status: DownPort Speed: 0 Station State: Link Setup Station Utilization In: 0%

Station Utilization Out: 0%Call Summary:

SVC PVCMaximum: 0 0Current: 0 0

Data Summary:IN OUT IN OUT

Characters: 12713984 0 Characters/sec: 0 0Packets: 0 0 Packets/sec: 0 0Frames: 0 1 Frames/sec: 0 0

Number of Packets Queued: 0




Statistics

Figure 8. MX25 Station Statistics Screen—Page 2 of 4

Figure 9. MX25 Station Statistics Screen —Page 3 of 4

Node: Address: Date: Time:Detailed MX25 Station Statistics: Port 1 Station 1 Page: 2 of 4

Frame Summary:IN OUT IN OUT

Info 0 0 RR 0 0RNR 0 0 REJ 0 0SNRM 0 0 UA 0 0FRMR 0 0 Aborts 0 0Packet Summary:

IN OUT IN OUTData 0 0 Receiver Ready 0 0Receiver Not Ready 0 0 Reject Packet 0 0Call Request 0 0 Call Accept 0 0Clear Request 0 0 Clear Confirm 0 0Interrupt Request 0 0 Interrupt Conf. 0 0Reset Request 0 0 Reset Confirm 0 0Restart Request 0 0 Restart Confirm 0 0



Last inbound LCN: 0Inbound processing status: Processed OK, call passed to ROUTLast Inbound Call, before processing:

Called Address:Calling Address:Facilities:CUD:

Last Inbound Call, after processing:Called Address:Calling Address:Facilities:CUD:



Statistics

Figure 10. MX25 Station Statistics Screen —Page 4 of 4

X25 Station Information

Detailed X25 Station Statistics contain this information:


Last Outbound LCN: 0Outbound processing status: Processed OK, call transmittedLast Outbound Call, before processing:

Called Address:Calling Address:Facilities:CUD:

Last Outbound Call, after processing:Called Address:Calling Address:Facilities:CUD:



Port Number Refers to the physical port number.

Port Type: Always displays XDLC indicating that this port is accessed by SDLC and HDLC protocols.

Station Type: Indicates MX25 for MX25 station types.

Station Number Station reference number.

Station Address Configured station address.

Station Status Indicates the current operational status of the station:• Up: Station is responding to polls.• Down: Station is not responding to polls.• Disabled: Station is disabled by the user.

Port Speed Measured port speed.



Statistics

Station State Indicates the current link status of the station:• Link Setup: Setting up the link.• NWake: Station has not responded to a poll but is still up.• Normal: Station is responding to polls.• Send Reject: Waiting for recovery after rejecting an invalid

frame.

Station Utilization

Indicates the percentage of current available station utilization in both IN (from the line to the port) and OUT (from the port to the line) directions.

Call Summary • Maximum: The maximum number SVC and PVC channels used by this station.

• Current: Number of SVC and PVC channels currently in use.

Data Summary • Characters: Total number of characters processed until now, not including frame and packet headers.

• Frames: Total number of frames processed until now.• Packets: Total number of data packets passed through the

station.• Number of Packets Queued: Total number of packets

queued at the MX25 protocol layer.• Characters/sec: The average number of characters received

or transmitted per second during the previous minute.• Frames/sec: The average number of frames received or

transmitted per second during the previous minute.• Packets/sec: The average number of packets received or

transmitted per second during the previous minute.

Frame Summary Total number of processed frames listed by frame type.

Packet Summary Total number of processed packets listed by packet type.

Last inbound LCN

Channel number of last inbound call.

Inbound processing status

• Success: Message has been sent through the network successfully.

• Process OK, call passed to ROUTE: Inbound call has been processed and passed on to Route and is being processed.

• Failed processing, call cleared: Inbound message was processed, but failed for some reason, and the call has been cleared.

Last Inbound Call (before processing)

• Called Address: The X.25 address that was called.• Calling Address: The X.25 address that initiated the call.• Facilities: The facilities that were requested in the most

recent call request packet.• CUD: Call User Data contains end-user or routing

information specific to the network.



Statistics

NoteCounters restart from 0 after the maximum count is reached. The statistics values that are monitored for overflow condition are Detailed XDLC Frame Statistics.

Last Inbound Call (after processing)




Last outbound LCN

Channel number of last outbound call.

Outbound processing status

• Success: Message has been sent through the network successfully.

• Process OK, call passed to ROUTE: Inbound call has been processed and passed on to Route and is being processed.

• Failed processing, call cleared: Inbound message was processed, but failed for some reason, and the call has been cleared.

Last outbound call (before processing)




Last outbound call (after processing)







XDLC Port Record Worksheet

XDLC Port Record Worksheet

Parameter Range/ Option Default Operator Entries

Port Number 1 to 54 1

Port Type[1] X.25, XDLC X.25

Port Control NONE, MB, RTS_MON

NONE

Transmission Encoding NRZ, NRZI NRZ

Type of Line FDX FDX

Transmission Type TWA, TWS TWS

Clock Source EXT, INT EXT

Clock Speed 1200 - 80000 9600 bps

Number of [1] XDLC Stations

1 to 32 [2] 4

Poll Timer 1 to 255 seconds 30

Poll Frequency Period 50 to 250 milliseconds

50

Tries 1 to 16 10

XDLC Port Options MARKi, NONE NONE

Port Address 0 to 15 digits blank

Restart Timer [3] 5 to 255 seconds 180

Reset Timer [3] 5 to 255 seconds 180

Call Timer [3] 5 to 255 seconds 200

Clear Timer [3] 5 to 255 seconds 180

[1] A Node boot is needed for any changes to this parameter to take effect. To avoid a Node boot while adding stations to the XDLC port, your can configure for the maximum anticipated stations for this port and disable the stations not in use. The XDLC PAD reserves space in its control blocks for all the configured stations. Although this results in some unused memory space, performance is not effected.[2] The total number of XDLC stations on a port can be up to a maximum of 32. This can be any combination of MX25 Slave stations and SDLC stations, including all MX25 stations or all SDLC stations.The user interface inhibits the user from configuring more than the allowable number of stations.[3] These parameters are for the MX25 protocol component only.


XDLC Station Record Worksheet

XDLC Station Record Worksheet

Parameter Range/Options Defaults Operator EntriesPort Number 1 to 54 1

Station Number 1 to 32 1

Station Type [1] MX25, SDLC MX25

[1] Once the station type is selected, you are prompted to enter configuration parameters for the selected station type.The station type can be changed without booting the port or the node; however, a Station boot must be done to make the change take effect. A Station boot does not disrupt the operation of any other stations.



SDLC Station Record Worksheet

SDLC Station Record Worksheet

Parameter Range/Options Defaults Operator EntriesStation Address 01 to FE, Hex digits 01

Frame Window 1 to 7 7

Autocall Mnemonic 0 to 8 alphanumeric characters

blank

Protocol ID Digits 1 to 8 Hex C3000000

CUG Membership 0 to 8 two-digit numbers

--,--,--,--,--,--,--,--

QLLC Options NONE, CUG, QRRs, XIDs, XID3

NONE

XID 0 to 14 Hex. Use space bar to blank field.

blank

Station Subaddress 1 to 3 BCD digits blank

Billing Records OFF, ON OFF


MX25 Station Record Worksheet

MX25 Station Record Worksheet

Parameter Range/Options Defaults Operator EntriesStation Address 04 to FE Hex digits 04

Number of [1] PVC Channels

0 to 128 0

Starting [1] PVC Channel Number

1 to 255 1

Number of [1] SVC Channels

0 to 255 16

Starting [1] SVC Channel Number

0 to 255 1

K Frame Window 1 to 7 7

Packet Window 1 to 7 2

MX25 Options NONE, INL, HOLD, CUG

NONE

Restricted Connection Destination

0 to 32 alphanumeric characters

blank

CUG Membership 0 to 8 two-digit numbers

--,--,--,--,--,--,--,--

Billing Records OFF, ON OFF

Data Queue Upper Threshold

5 to 15(data packets)

5

Data Queue Lower Threshold

0 to 4(data packets)

0

[1]A Node Boot is needed for any changes to these parameters to take effect.



Index

C

ConfiguringMX25 port 5SDLC HPAD port 6XDLC port record 5XDLC station record 13

D

Detailed MX25 Station Statisticsdescription 27viewing 27

Detailed Port Statistics 21Detailed XDLC Link Statistics

description 24viewing 24

Detailed XDLC Port Statisticsdescription 21viewing 21

F

Frame Handlingfunction 2

H

HPAD Poll Response Delayparameter 6specifying 6

L

Link Pollingfunction 2

Link Proceduresframe handling 2MX25 protocol 2polling 2SDLC protocol 3XDLC PAD 2

M

MX25 Port Parametertransmission encoding 5

M (Continued)

MX25 Station Parametersbilling records 20CUG membership 20data queue lower threshold 20data queue upper threshold 20K frame window 18MX25 19number of SVC channels 18packet window 19PVC channels 17restricted connection destination 19starting PVC channel number 18starting SVC channel number 18station address 17

MX25 Station Recordfunction 17

N

NRZI Support for MX25 5

P

Physical Line CharacteristicsXDLC PAD 4

Pollingfunction 2

Port Statisticsexamples 21

S

SDLC 6SDLC HPAD Port Parameter

HPAD response delay 6SDLC Station Parameters

autocall mnemonic 15billing records 17CUG membership 15frame window 15protocol ID digits 15station address 14station subaddress 17XID 16

Statisticsdetailed MX25 station 27detailed XDLC port 21XDLC station 25

T

Transmission Encodingparameter 5specifying 5

Index-1

W

WorksheetsMX25 Station Record 35SDLC Station Record 34XDLC port record 32XDLC Station Record 33

X

X.25 Data Link Control. See XDLCXDLC PAD Port

components 2link polling function 2link procedures 2physical line characteristics 21software characteristics 4supported hardware 4

XDLC Port Parameterscall timer 11clear timer 11clock source 9number of XDLC stations 10poll frequency period 10poll timer 10port address 11port control 8port number 8reset timer 11restart timer 11transmission encoding 9transmission type 9tries 10type of line 9XDLC port options 10

XDLC Protocoldescription 1functions 1typical application 2

XDLC Station Parametersport number 14station number 14station type 14

XDLC Station Recordfunction 13

XDLC Station Statisticsviewing 25

Index-2

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